104791561 has 8 divisors (see below), whose sum is σ = 120219264. Its totient is φ = 89478240.

The previous prime is 104791549. The next prime is 104791597. The reversal of 104791561 is 165197401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 104791561 - 2¹³ = 104783369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104791541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26620 + ... + 30301.

It is an arithmetic number, because the mean of its divisors is an integer number (15027408).

Almost surely, 2^104791561 is an apocalyptic number.

It is an amenable number.

104791561 is a deficient number, since it is larger than the sum of its proper divisors (15427703).

104791561 is an equidigital number, since it uses as much as digits as its factorization.

104791561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57191.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 104791561 is about 10236.7749315886. The cubic root of 104791561 is about 471.4570161813.

The spelling of 104791561 in words is "one hundred four million, seven hundred ninety-one thousand, five hundred sixty-one".